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-define(TCP_OPT_False,[binary,{packet,2},{active,false},{reuseaddr,true},{nodelay,true},{keepalive,false},{send_timeout,15000}]).
-define(TCP_OPT_True, [binary,{packet,2},{active,true} ,{reuseaddr,true},{nodelay,true},{keepalive,false},{send_timeout,15000}]).
-define(TCP_OPT_Once, [binary,{packet,2},{active,once} ,{reuseaddr,true},{nodelay,true},{keepalive,false},{send_timeout,15000}]).